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arXiv · 2501.15146

Elementary considerations on possible entropy-driven cosmological evolutions

Jamy-Jayme Thézier·Aurélien Barrau·Killian Martineau
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Abstract

For several independent reasons, the idea that notorious sources of entropy could exist in the Universe has been recently revived. Taking advantage of a new framework accounting for non-equilibrium processes in cosmology, we explicitly investigate the cosmological dynamics as a function of the entropy production, focusing on the stability of the system. An exhaustive investigation is performed. As the main physical conclusion, we show that for a wide class of entropy source terms, the fluid dynamics converges towards an effective cosmological constant. Constraints on the associated entropic force are also obtained.

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Jamy-Jayme Thézier, Aurélien Barrau, Killian Martineau. 2025-01-25. Elementary considerations on possible entropy-driven cosmological evolutions. https://arxiv.org/abs/2501.15146

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